Horsetail Tree

Casuarina equisetifolia, commonly known as coastal she-oak, horsetail she-oak, beach sheoak, beach casuarina or whistling tree is a species of flowering plant in the family Casuarinaceae and is native to Australia, New Guinea, Southeast Asia and India. It is a small to medium-sized, monoecious tree with scaly or furrowed bark on older specimens, drooping branchlets, the leaves reduced to scales in whorls of 7 or 8, the fruit 10–24 mm (0.39–0.94 in) long containing winged seeds (samaras) 6–8 mm (0.24–0.31 in) long.

Casuarina equisetifolia
Casuarina equisetifolia - Darwin NT.jpg
Subspecies equisetifolia near Darwin
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Casuarinaceae
Genus: Casuarina
C. equisetifolia
Binomial name
Casuarina equisetifolia
  • C. e. subsp. equisetifolia
  • C. e. subsp. incana

Casuarina equisetifolia var. typica Domin

Subspecies incana near Rockhampton
« Back to Glossary Index